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A.L.-TEETOR.'

SAND MOLDING MACHINE.

No. 397,316. v Patented Feb. 5, 1889.

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(No Model.) Y (Sheets-Sheet 2- A. L. TEETOR.

I SAND MOLDING MACHINE. v No. 397,316. Patented Feb. 5, 1889.

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(No Model.) 4 Sheets-Sheet 3.

A. L. TEETOR.

SAND MOLDING MAGHINE.

No. 397,316. Patented Feb. 5, 1889.

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33L Qu t-01mm aflzjiacoba (No Model.) 4 Sheets-Sheet 4.

A.L.TE ETOR.

SAND MOLDING MACHINE.

No. 397,316. Patented Feb. 5, 1889.

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N. PETERS. Phulo-Lilhvgrnphcr. Washington. QC

UNrrEn STATES PATENT -QFFICE.

ABRAHAM ll. 'IEE IYJR, OF INDIANAPOLIS, INDIANA, SSIGNQR OF ONE-HALF 'lO\VIIILIAM vl' I'IIIEIIEAD, OF SAME PLACE.

SAND lViOLDING MACHINE.

SEEOIFICATION forming part of Letters Patent No. 397,316, dated February5, 1889.

Application filed June 1 6 1 8 88.

To all 11.71.0112 it may concern.-

Be it known that I, ABRAHAM L. TEETOR,

of Indianapolis, county of Marion, and State of Indiana, have inventedcertain new and useful Improvements in Sand-Molding Machines; and I dohereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the accompanying drawings,in which like letters refer to like parts.

My invention relates to the construct ion of sand-molding machines; andits object is to provide a sa t'e and ready means for clamping the flaskin position upon a revolving plate I 5 or frame; also, to provide meansfor vibrating the pattern, so as to loosen it in the sand to allow itsfree withdrawal, dispensing with the usual method of wrapping thepattern; also, to provide means for raising the cross-head and table inposition for receiving the flask, and for carrying the flask from themachine out of the way by means of the swinging crane, such crane beingeither automatic or otherwise in its operation; and it consists in theconstruction and arrangement of the various parts,hereinafter describedand claimed, and as will be understood from the following description.

In the drawings, Figure 1 is a front view of the entire machine, thedotted lines representing the position of the parts when the flask hasbeen lowered. Fig. is a bottom view of the swinging crane. is a ver-Fig. 0

tical longitudinal section of the upper part of 3 5 the machine. Fig.iis an enlarged detail view of one end of the clamping device. Fig. 5 isa section through a part of the clampingplate, pinion, and eccentric.Fig.6 is an edge view of one end of the reversible plate to which thepatterns may be directly attached, and which may be used either with orwithout the frame shown in Fig. 11. Fig. 7 is a top view of one arm ofthe crosshead, its antifriction rollers, guide, and upright; also thedevice for automatically operating the swinging crane. Fig. 8 is a sideview of the auto matic device for swinging the crane. Fig. 9 is a bottomview of the guide-lwackets. Fig. 10

is a view of one end of the machine, showing the hand-wheels andvibrating mechanism.

Serial No. 277,394. (No model.)

Fig. 11 is a top view of the revolving frame and plateto which thepatterns are secured. Fig. 12 is a top view of the cross-head. Fig.

13 is a cross-section through the upper and lower flasks andpattern-plate, showing how the guide-pin from. the lower flask passes upthrough the pattern-plate into the projection from the upper flask.

In detail, 1 l are the end supports or uprights which support the entiremechanism, 60. these being tied together and braced by the plates 2, andarranged so as to form a tripod-base, and having projections at theupper end, in-which are journa led axles 3 of a revolving plate orframe, 4'.- The plates 2 are bolted together, in this case near thecenter of the machine, as seen in Figs. 1 and 9, forming a housing inwhich to place the link-motion used in the machine, and are at each endbolted to uprights 1. 1.

In the center of the revolving frame is secured a pattern-plate, 5, bystrips 7 secured with screws or otherwise. The pattern-plate 5 in thiscase has 'two projections at one side, one having a hole correspondingin size and 7 5 location to the guide-pin of the flask to be used, andthe other having a slot which is longitudinal with the machine and equalin width to the diameter of the other hole, so as to admit of anyvariation or irregularity in So the distance that may occur between theguide-pins. To the plain sides of this plate are secured the patterns orparts of patterns at the general parting-lines, as may be seen at 6,-andwhen the parting-lines are irregular the plate can be made to conformthereto.

8 is a flask of the usual form used in sandm oldin g.

10 is a board, such as is used in hand-molding to prevent the sand fromfalling out of the flask on its being rolled or turned over.

11 11 are levers mounted on external ends of a shaft j ournaled in therevolving plate 4t and transversely through the axis of the latter.

pinions 14,0f which there is preferably one at each corner of frame 4.These latter pinions are mounted eentrallyon fixed stud-pins 56, and,are provided with an eccentric sleeve or hub, 57, formed integraltherewith, the latter being jonrnaled in the center of the end sectionof the clamping-bail l5. ()ne of these clamping-bails is at each'end ofthe revolving plate, as seen at 15 15 in Fig. 2?, and as is evident theupper sides of these clampingbails must tall or incline toward eachother 1 to bind down the board 10 on flask 8. The bails being reallyrings sln-rmnlding the revolving plate entirely and pivoted centrally,it is evident that while the upper part of each is falling toward thecenter the lower side must recede from the center of the machine. Thuswhile a flask is being bound down on the upper side of the revolvingplate the flask on the under side is thereby released. These bails areoperated in the following manner: The double rack-bars 11: are movedback and forth by the levers l 1, one of which. is always in properposition to operate and engage, say, at the upper side of the pinions llat one end of the machine and at the under side of the pinions at theother end. It is seen that they will revolve in opposite directions, andby virtue of frictional contact occurring between the sides of thepinions ill andinner surfaces of the balls, against which they bear, thebails are moved in a corresponding direction until they strike downagainst the top of the board 10, covering the flask, as seen at 15 15,Fig. 3, when they will cease moving forward. As the pinions with theireccentrics 57 are revolved still further by the same operation of leverIll, the bails will be drawn down iirml y by the action of theeccentrics which operate now, drawing in a directline from the point ofcontact of the bail on the board 10 toward the center of the eccentrics,holding the board lirmly to the flask.

16 is a halal-wheel mounted securely upon one axle, 3 of the revolvingframe, and is provided with two handles placed diametrically opposite,within which are latches l7,pivoted at 18, which are alternately forcedby springs (not shown) into engagement with a projection, 20, whichformed on the outside of the end upright of the machine and adapted tocatch and hold tl'lelatches firmly, these springs being located withinthe spaces 19. (See Fig. 3.)

21 is a lever secured at will on either end of a short transverse shaft,on which are mounted counteracting springs and an arm, 22, to which ismovably attached at 23 a curved link, 24, which is attached to lever atThis lever is pivoted to plates 2 at its outer end, and has connected toits inner end at 27 a link, 23, which is connected at 29 to plate 30,which may be secured to or be integral with the cross head ill, which isprovided at each end with anti-friction wheels it), as shown in Fig. 12,adapted to move along the three sides of the guides 3t, which are fixedon the inner-sides of the uprights of the frame.

To the under side of cross-head 31 are secured, centrally and oppositeeach other, two guide-brackets, 33, at the lower ends of which aremounted anti-friction wheels 3.), there being two of these wheels ineach bracket, and placed in this case opposite to other two and all incontact with guides til on plate 2. (See Figs. 1 and 9.) It is seen thatwith this arran gement of wheels at this point and that of the wheelsmounted in each end of the crosshead 31 when the cross-head is raised orlowered its movement must be uniform and equal at all points and withbut little fricl ional resistance.

32 is a universally-adjustable movable table, supported at its center bymeans of a ball-and-socket joint, and steadied at three or four lateralpoints by pins 35, which are held in sockets adapted to them by plates36. These pins extend down through opcl'lings in the cross-head arms,and are given a certain frictional resistance which may be regulated toany desired degree by the use of screws, which secure the swingclamping-arms 37, which partly embrace these pins, as shown in Fig. Thusit will be seen that though the flasks be unequal in depth at one sideor end as eom 'lared to that of the other this table will accommodateitself to such irregularity, upon being pressed up tirmly against theflask below, as seen in Figs. 1 and 2, and is held in such adjustedposition by the steadyingpins $35, so that the flask moves evenly at allpoints from the pattern-plate on being withdrawn. This feature makespossible and practical the process of returning the pattern back intothe mold after having been withdrawn and dusted with fine facing-sand,as is practiced to a considerable extent where tine castings areproduced. Again, this is a very valuable feature in cases where patternsare used having but little or no draft and very deep. Thus in this caseit the table were rigid and the flask uneven in a slight degree, theflask would fall on being nnclamped at the side having the least depthuntil y it had equalbearin g on the table, which would cause the patternto undercut or break down the sand, and this would be destructive to themold.

The vibrating mechanism will now be described.

40 is a wheel loosely mounted on an axle, 3, (see Fi 10,) outside ofhand-wheel l 6. It has pivoted to its rim att5 an an ehor-sh aped doublecam-lever, its middle arm reaching to the center of the wheel andterminating at its free end in a fork, as seen at ll, the two prongs ofwhich reach, preferably, to opposite sides of the hub of wheel 10. Thisdouble cam-lever has its two lateral arms of the same size and shape,each forming a pallet, as seen at 43, adapted to follow closely thecontour of the cam-wheel 42, which may be angular at its periphery asshown in the drawings; or it may be represented by an ui'ldulating orwave line. Thus it will be seen that when the wheel 46 is rotated on itsaxis, carrying with it the double cam-lever, the wheel t2remainingstationary, being in this case secured to arms of wheel 16,said lever is oscillated rapidly upon its axis, causing the prongs 4% tostrike sharply from either side against the hub of wheel 10, jarring theaxle 3 and the pattern, and loosening it in the sand, as more fullydescribed hereinafter.

Fig. 2 is a view, looking from beneath, of a swinging crane, 47, havingtransverse fingers t8, and hinged at 5L9 to rod 50, which is secured tothe end upright of the machine by clips or eyes 51. The fingers $8 ofthis crane 47 reach by the ends of the table and under the ends of theflask which project beyond the table. When it is closed into themachine,

these fingers lie next over the long arms of position, and one or moreof these projections are placed at such height that when the table islowered with the flask the crane stops its descent a short distanceabove the'lowest, point reached by the table, thus supporting the flaskclear of the table, so that the crane can be easily swung out fromwithin the ma chine, and when relieved of the flask may be swung backagain into the machine to be carried up and back to receive the nextflask. This crane is made to operate automatically by an anti-frictionroller, 55, secured on the upper eye, 49, of the crane, as seen in Figs.7 and 8, and a cam, 53, set on rod 50 at any desired height, said camhaving projections en gaging with the end upright which keep it fromturning when the roller 55 comes in contact with it, and rolling downthe incline the crane will swing out, carrying with it the flask. Thecrane is then at the lowest point neces sary for it to drop to, and theroller 55 rests on the opposite and lower point on cam 53. A cam, 54,which is a reverse cam, as compared with 53, is secured at one end tothe cross-head arm, as seen in Fig. 7, reaching out and nearlysurrounding cam 53, and near to it so as to catch the roller This cam,rising with the table, will evidently return the crane automatically toits position near the table to receive another flask.

The machine operates as follows; One of the latches 1T brought intoengagement with projection 20, that the revolving frame andpattern-plate may assume a fixed horizontal position. Now suppose thatthere is no flask on the machine, as shown in Fig. 3, and that. thebails 15 are in a reversed position, as represented by dot-ted lines l5.A flask, 8, is placed in position on pattern-plate 5, the pins of theflask in place. The flask'is then filled with sand and tamped or rammedin the usual manner and the board 10 placed thereon, and the bails drawnas shown at 15 15, the table and crane being at their lower position,asrepresented by dotted lines, Fig. 1. The latch 17 is then released fromcatch 20 and the revolving plate 5 turned the upper side down, when thelatch 17 in the opposite handle will be brought into engagement with thecatch 20, and the table and crane elevated by lever 21 through theinterven ing mechanism, until the table bears firmly against the board10, beneath and under the flask. Another flask matching the one nowbeneath is set upon the plate, the pins of the first flask projectingthrough the patternplate 5 and locating the second flask properly. Thesecond flask is tilled with sand, tamped, covered with another board 10,and the bails 1 drawn, at the same time being withdrawn, as

before shown, from the flask beneath, allowing it to rest entirely onthe table 32. Now to withdraw the lower flask from the pattern, a fewrapid turns are given in either direction to the wheel 46, to which ispivoted art-5 .5 the double camdcvcr, which rapidly oscillated throughits engagement with the cam wheel 4-9, and bein adapted to strikesharply against the hub of wheel 10 sets up a series of rapidvibrations, and the strokes coming as they do from all sides toward theaxis of the revolving frame a general tremor perme-' ates this entiresection of the machine, freeing the sand thoroughly from the pattern.After this tremor has begun and before it ceases, the table is loweredwith the flask, the table moving a little below the lowest point towhich the crane-fingers t8 drop. The flask is then carried from themachine on said crane. Plate -.L is again revolved, bringing the secondflask beneath. The tablc32 is again elevated, another flask placed onthe machine,

= and the operation continued as before.

I am aware that sand-molding machines having reversible molding-tablesmounted in bearings on the top of the machine and provided with clampson each side are not new,

and do not broadly claim the same as my inl. A sand-molding machinecomprising, in-

combination, a reversible molding-table mounted in bearin at the top ofthe machine, a pair of clamps connected by a rack-bar which is operatedby means of a lever and pinion at one end of the table, whereby theupper clamps are thrown in position for holding the board upon theflask, a frame-work providing bearings for the axle of such reversiblemolding-table, and a hand-wheel mounted on such axle provided withlatches engaging with projections connected to the uprights of the framefor locking the reversible molding-table in a horizontal position,substantially as shown and described.

2. A sand-molding machine comprising, in combinatiim, a reversiblemolding table mounted in bearings at the top of the machine, aframe-work snpporti ng and providing bearings for the axlcof suchmolding-table, a handwhcel mounted on such axle and provided wit hlatches engaging with projections on the frame for locking such table ina horizontal position, and a verti(ally-movable table resting uponself-adjusting center and COl l'lQl i a wheel, 46, loosely mounted uponthe axle 3,

bearings below the reversible molding-table, mounted on guides in theframe and connected by suitable rods and links to a shaft provided witha lever foroperatiug the elevating mechanism, substantially as shown anddescribed.

A sandanolding machine comprising, in combination, a reversible moldingtable mounted at the top of the machine, a framework providing bearingsfor the axle thereof,

and vibrating mecluinism for jarring such;

{ crane, 4-7, having fingers 48, loosely hinged to the rod 50 by eyes49, the upper one of which table and the pattern supported by it, saidmcchan ism bcin g mou 1 l ted on and constructed and arranged to strikeupon such axle, substantially as shown and described.

1. A sandmolding machine comprising, in combination, a frame-work, areversiblcmolding-plate mounted in bearings at the top thereof, a pairof clamps connected to each end of 1 such molding-plate, a rack-bar foroperating such clamps, a pinion. whose inner face bears againstthe innerface of such clamp, provided with an eccentric hub mounted upon astud-pin passing through such clamp and conncct-ed to the frame, apinion. mounted on a transverse shaft, a lever for operating suchpinion, whereby motion is communicated to the rack-bar and the clampsthrown down so as to bind the top of: the flask placed upon themoldiug-plate, a table mounted on self-adj usting bearings forsupporting the lower half of the flask when the table is reversed, averticallyanoving cross-head carrying such table and mounted on guidesin the frame and connected by suitable links or rods to a shaft providedwith a lever for operating the lifting mechanism, and a swinging cranehinged to a rod connected with one side of the framework, and providedwith fingers resting upon the cross-head beneath the adjustable tablewhich carries the flask-section, such fingers adapted to support theflask, whereby the latter may be swun back outol' the machine,substantially as shown and described.

in a samlanolding machine,a self-adjust- 1 ing vcrtically-moving tablefor supporting and lowering the lower half of the flask, mounted upon auniversal bcarin at its ceir ter and provided at or near its edges withunivm'sally-jointed steadying-pins having an adjustable frictional.resistance, and supported by a cross-head mounted on guides in the frameand adapted to be raised or lowered by means of. suitable mechanism,substantially as shown and described.

(I. In a sand-molding machine, a reversible molding-plate provided withtrunnions having bearings in the top of the frame and carrying a pair ofpivoted double clamps at each end, a rack-bar on each side connected tosuch clamps at each end, operated by suitable pinions, and levermechanism,whereby the clamping of the upper bail of the clamp willrelease the grip of the lower by the same movement, substantially asshown and de scribed.

7. In a sand-molding machine, the vibrating mechanism herein described,comprising which carries the reversible molding-frame 4:, the doublecam-lever 4C4, pivoted at 45 to the rim of such wheel, its middle armdepending to strike the axle, its other end terminating in a forkprovided with. two lateral arms forming a pallet, 43, and the cam-wheel42, keyed upon the axle 3, substantially as shown and described.

8. In a sand-molding machine, a swinging carries a i'rictiol'i-wheel,55, engaging with the cam-block 53, secured to the rod 50, and thereverse-cam 54, having one end secured to an arm of the cross-head 31,substantially as shown and described.

9. A sand-molding machine comprising, in combination, a frame composedof the uprights 1., connected by the bridge-plate 2,11aving thecross-head 31 moving therein by friction-wheels 40 upon guides 34, thereversible plate or frame 4, provided with trunnions 3, having bearingsin the top of the frame, a hand-wheel, 16, mounted upon one of suchtrunnions for revolving the same, provided with latches l7, pivoted at18 in recesses 19, such latches engaging with a in'ojection, 20, uponthe outside of the frame, the patternplate 5, carried in strips 7, forsupporting the patterns 6, the double reversible clamps 15, havingfrictional contact with the pinion 14, and being eccentrically mountedthereon, the latter engaging with the rack-bar 13, the pinion 12, havinga lever for'revolving the same, such pinion also engaging with therack-bar for operating the clamps at each end, the adjustable table 32,for supporting the lower section of the flask, carried in self-adjustingbearings at the top of the cross-head, the casting 33, link 28, pivotedat 27 to link 26, the latter pivoted at 25 in the side of the frame andconnected by a wrist with the curved link 24:, the latter connected withthe crank or arm 22, whose other end is connected with a shaft uponwhich a lever, 21, is mounted for operating the elevating mechanism, andcounteracting springs, substantially as shown and described.

10. A sand-molding machine comprising, in combination, a frame-worksupporting in bearings upon its top a reversible molding-plate, meansfor locking such molding-plate in a horizontal position, a table restingupon selfadjusting bearings for supporting the flasksection carried upona cross-head movable vertically within the frame, mechanism,substantially as described, for raising and lowering such table, a cranehinged to the frame and carried up and down by the movement of suchcrosshead, and means for automatically swinging the crane when it hasreached its lowest point, carrying the flask away from the machine andclosing it into the machine by the elevation of the cross-head,operating and arranged substantially as described.

11. I11 a sand-molding machine, a crane having fingers for carrying theflask-section, hinged to a rod connected to the frame of such machine,the fingers restingywhen closed, upon a cross-head movable vertically inthe frame, such crane provided with an automatic opening and closingmechanism, and means whereby this mechanism is actuated by the ascentand descent of the cross-head, substantially as shown and described.

12. A sand-molding machine comprising, in combination, a frame-workcarrying a reversible molding-plate in bearings upon its top, suchmolding-plate having a pair of double clamps connected at each end withmechanism for operating such clamps, whereby the bringing of the upperpair in position to lock them upon the flask releases the grip of thelower clamps, substantially as shown and described.

13. In a saml-molding machine, the combination, with a reversiblemolding-plate journaled in a frame-work, and means for lockin g such moldin g-platc in a horizontal position, of a selt-adjustin gvertically-movin g table for supporting orlowering the lowcrflask-section, mounted upon a universal bearing at its center andprovided at or near its edges with universally-jointed steadying-pinshaving an adj ustabie frictional. resistance for lowering such flaskevenly at all points from the pattern, substantially as shown anddescribed.

In witness whereof I have hereunto set my hand this llth day of June,1888.

ABRAHAM L. TEETOR.

Witnesses:

O. P. JACOBS, E. B. GRIFFITH.

